Date extension to JS, formatting dates

/** * Extension to Date, string months (m), days (d), 12 hours (h), 24 hours (h), minutes (m), seconds (s), Weeks (E), quarter (q) * can be used with 1-2 placeholder Emperor reign (y) with 1-4 placeholders, milliseconds (s) only can use 1 placeholders (1-3 digits) Eg: (NEW * Date ()). Format ("Yyyy-mm-dd Hh:mm:ss. S ") ==> 2006-07-02 08:09:04.423 (NEW * date ()). Format (" Yyyy-mm-dd E HH:mm:ss ") ==> 2009-03-10 two 20:09:04 (NEW * Date  ()). Format ("Yyyy-mm-dd EE hh:mm:ss") ==> 2009-03-10 Tuesday 08:09:04 (NEW * Date ()). Format ("Yyyy-mm-dd EEE hh:mm:ss") ==> 2009-03-10 Tuesday 08:09:04 (NEW * Date ()). Format ("yyyy-m-d h:m:s.s") ==> 2006-7-2 8:9:4.18 */date.prototype.format = func tion (fmt) {var o = {"m+": this.getmonth () + 1,//Month "d+": this.getdate (),//day "H +": this.gethours ()% = = 0? 12:this . GetHours ()% 12,//hours "H +": this.gethours (),//Hour "m+": this.getminutes (),//min "s+": This.getseconds (),//sec "q+": math.fl Oor ((This.getmonth () + 3)/3),//Quarterly "S": this.getmilliseconds ()//milliseconds};var week = {"0": "/u65e5", "1": "/u4e00", "2": "/U 4e8c "," 3 ":"/u4e09 "," 4 ":"/u56db "," 5 ":"/u4e94 "," 6 ":"/U516D "};if (/(y+)/. Test (FMT)) {FMT = Fmt.replace (regexp.$1, (this.getfullyear () + ""). substr (4-regexp.$1.length));} if (/(e+)/.test (FMT)) {FMT = Fmt.replace (Regexp.$1, ((Regexp.$1.length > 1)? (Regexp.$1.length > 2?) "/u661f/u671f": "/u5468"): "") + week[this.getday () + ""]);} For (var k in O) {if (New RegExp ("(" + K +) "). Test (FMT)) {FMT = Fmt.replace (regexp.$1, (regexp.$1.length = = 1)? (O[k]): (("XX" + o[k]). substr (("" + O[k])));}} return FMT;};

　　

Date extension to JS, formatting dates